Java 为图片添加水印（图片水印，文字水印）
```java
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import javax.imageio.ImageIO;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
public final class ImageUtils {
public ImageUtils() {
}
/**
* 把图片印刷到图片上
*
* @param pressImg
* --水印文件
* @param targetImg
* --目标文件
* @param x
* --x坐标
* @param y
* --y坐标
*/
public final static void pressImage(String pressImg, String targetImg, int x, int y) {
try {
// 目标文件
File file = new File(targetImg);
Image src = ImageIO.read(file);
int wideth = src.getWidth(null);
int height = src.getHeight(null);
BufferedImage image = new BufferedImage(wideth, height, BufferedImage.TYPE_INT_RGB);
Graphics g = image.createGraphics();
g.drawImage(src, 0, 0, wideth, height, null);
// 水印文件
File filePress = new File(pressImg);
Image srcPress = ImageIO.read(filePress);
int wideth_biao = srcPress.getWidth(null);
int height_biao = srcPress.getHeight(null);
g.drawImage(srcPress, (wideth - wideth_biao), (height - height_biao), wideth_biao, height_biao, null);
g.dispose();
FileOutputStream out = new FileOutputStream(targetImg);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
encoder.encode(image);
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 打印文字水印图片
*
* @param pressText
* -- 文字
* @param targetImg
* -- 目标图片
* @param fontName
* -- 字体名
* @param fontStyle
* -- 字体样式
* @param color
* -- 字体颜色
* @param fontSize
* -- 字体大小
* @param x
* -- x偏移量
* @param y
* -- y偏移量
*/
public static void pressText(String pressText, String targetImg, String fontName, int fontStyle, int color,
int fontSize, int x, int y) {
try {
File file = new File(targetImg);
Image src = ImageIO.read(file);
int wideth = src.getWidth(null);
int height = src.getHeight(null);
BufferedImage image = new BufferedImage(wideth, height, BufferedImage.TYPE_INT_RGB);
Graphics g = image.createGraphics();
g.drawImage(src, 0, 0, wideth, height, null);
g.setColor(Color.RED);
g.setFont(new Font(fontName, fontStyle, fontSize));
g.drawString(pressText, wideth - fontSize - x, height - fontSize / 2 - y);
g.dispose();
FileOutputStream out = new FileOutputStream(targetImg);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
encoder.encode(image);
out.close();
} catch (Exception e) {
System.out.println(e);
}
}
public static void main(String[] args) {
pressImage("E:/logo.png", "E:/ceshi.jpg", 0, 0);
}
}
```